Originally Posted by nightowl1985

Do you know what your clearances are set to? If they are greater than stock and especially .0025+ 20w-50 oil is highly recommended.

Originally Posted by dsmdanevo

They are an extra .005”. I ran 20w50 bradpenn as well with same thing happening.

Originally Posted by dsmdanevo

Bringing this back as I'm having almost exact same things happen and want to see if you found anything interesting! I was running 10w40 and now have 15w40 in and I get 100+psi at idle on cold startup, warm idle is between 25-30psi. When cruising it is around 65-70psi. Goes to about 85psi when I go WOT and then around 7,800rpm-9k it slowly drops into low 70s. Get back under that RPM after I let off then it is back to around 70psi. It did this before and after adding my STM oil cooler just for reference. I have pulled my last 2 filters apart and there is no metal. Also pulled the pan for kicks and all rod bearings are perfect .

Important details:
-Fresh engine build (less than 2k miles)
-Balance shaft delete (piston oil squirters still in)
- Brand new OEM oil pump (when engine was built)
- All hidden oil galley bolts sealed such as behind the engine mount
- Brand new OEM Buschur baffled oil pan (never been pushed on)
- Kiggly HLA
- GSC zero tick lifters
- AEM 150psi sensor on oil filter housing (not back of engine block)
I bought a whole new OEM gasket kit for the pump and OFH and sprayed then with copper spray to also make sure nothing was getting past the gaskets for some reason. Didn't really do anything.

It's just weird because as long as I am under 7.8k the oil pressure is great. Did you ever figure anything out on yours?

Originally Posted by nightowl1985

Have you pulled your front cover and inspected the oil pump?

Originally Posted by Innovation-USA

yeah, so I was running my oil pressure sensor to the factory placement on the back of the block for my 8! I am now using the AMS remote oil pressure line from the oil filter housing and now I am getting higher and better readings.

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https://www.maperformance.com/produc...s-01-04-0104-1

Originally Posted by RSMike

@dsmdanevo seeing as you took off your pan - what's your pickup opening to pan internal floor clearance?

Originally Posted by dsmdanevo

I appreciate it, however I already have the remote mount kit off the OFH. Perhaps I can try remounting the sensor itself, maybe it’s getting some harmonic vibrations at higher RPMs!?!

Originally Posted by dsmdanevo

I did not try to measure this clearance as again, the pan is brand new OEM that Buschur added the baffle in. The pan hasn’t been pressed on or touched, as I know that’s bad news bears.

If it comes down to it, I can tear it all apart again, just seems strange.
Could the baffle be causing oil to not get to the pickup tube quick enough under acceleration? I guess that is a thought. I’m sure there are a bunch of these pan mods on other cars so maybe unlikely…. But, if memory serves me correctly. The baffle piece is a round sleeve almost, that fits around the pickup screen/hole in pan.

Originally Posted by RSMike

If you warm up the engine and rev to redline - does the oil pressure go down?
Or is it only happening when you're accelerating?

Originally Posted by dsmdanevo

Only on hard acceleration about 7,800rpm or so. When I start the car up cold it’s around 95psi and if I rev it cold it’s up to 115-120psi. We are talking temps in the low to mid 50s where I am from sitting at night.

Even fully warmed up and hitting the throttle it will go over 80psi (though I haven’t thought of just holding it about 8k for a second or so and logging to see if it drops, till now). Same with cruise. 3k rpm is like 65psi steady. It even takes the car getting real warm for the pressure to drop down to 25psi at idle (around 1k rpm).

Just pulled and cut the current oil filter and it’s perfectly clean also. So by all accounts, not hurting anything at the moment.

Originally Posted by RSMike

Wherever you're seeing the pressure drop, try going to that RPM in the driveway and hold it there for a few seconds to see if the pressure dips.
If it doesn't dip at all, you may just need an extended sump.
Kinda normal, depending on your power level.
You may find that it doesn't dip in 4th gear, but it will dip in 1st-3rd gears. (Longitudinal G-Force)

Originally Posted by dsmdanevo

I will try it this weekend and also look at some past logs where I went into 4th gear and see if the pressure stayed more consistent. I’ll def report back.

Do you have any clue what the oem pan to pickup clearance is and how much closer and extended pickup gets to the floor of the pan? I’ll also do some research on my end. Thanks